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Conductive rubber O-profiles 7900
Conductive Rubber O-profiles developed for high performance shielding. Used where environmental & EMI screening is required but little space is available.
Several types of O-profiles have been developed for different applications, each with its own advantages. O-profiles were originally designed for high-performance shielding, mainly for military applications. They are used when environmental sealing and EMI screening are required, and where there is little space.
Four kinds of extrusion types are available: 1: hollow, 2: solid, 3: Cell Rubber and 4: rectangular. These extrusion cores can be covered with metallized fabric foil or they can be made out of conductive rubber. For optimal shielding performance a compression of 5-10 % is recommended for solid elastomers and 10-50 % for hollow extrusions and sponge rubbers.
Benefits
- Easy to fit into grooves
- Deflection up to 50%
- Low closure force
Options (on request)
- Cut into accurate lengths or endless O-rings
- Drop-out prevention fixtures
- UL94V-0 flame-retardant version
- High temperature-resistant Silicone core (up to 220 °C)
- Fluorosilicone (silver aluminium, silver copper, nickel, nickel graphite) for applications with chemicals
Can be delivered on reel or in length you desire
Example of the O-profile in use
It can be delivered in different shapes & sizes
Compression
Solid elastomers cannot be compressed much. They are easily deformed but the volume does not change as would be the case with sponge elastomer (PVC, EPDM, Neoprene) so that allowance for material flow must be considered in the groove design.
The figure below shows two different groove designs. On the left there is a typical rectangular groove, while the design on the right can mechanically retain circular cross-section gaskets by side friction.
Material options
| Type | Code | Core | Cover |
|---|---|---|---|
| 7900-x-1-1-x | 1-1 | Neoprene | Amucor foil |
| 7900-x-1-2-x | 1-2 | Neoprene | Conductive fabric |
| 7900-x-2-1-x | 2-1 | Silicone | Amucor foil |
| 7900-x-2-2-x | 2-2 | Silicone | Conductive fabric |
| 7900-x-3-1-x | 3-1 | PVC | Amucor foil |
| 7900-x-3-2-x | 3-2 | PVC | Conductive fabric |
| 7900-x-4-1-x | 4-1 | EPDM | Amucor foil |
| 7900-x-4-2-x | 4-2 | EPDM | Conductive fabric |
| 7900-x-5-3-x | 5-3 | Silvered particles filled silicone rubber | - |
| 7900-x-5-4-x | 5-4 | Nickel filled silicone rubber | - |
| 7900-x-5-5-x | 5-5 | Graphite filled silicone | - |
| X needs to be replaced for extrusion type & dimensions | |||
Extrusion types
Special materials (on request)
These O-profiles are also available in special materials for special applications for example applications with chemicals. Below is a list of special materials. For availability and delivery please email [email protected].
- Silicone Carbon
- Fluorosilicone Nickel Graphite
- Silicone Nickel Graphite Flame Retardant
- Silicone Silver Aluminium
- Fluorosilicone Silver Aluminium
- Fluorosilicone Nickel
- Silver Plated Nickel
- Silver Glass
Shielding performance and technical details table (dB)
Shielding effectiveness depends on the surface, the shape of gaskets and the materials used.
| Conductive Filler | Conductive fabric | Amucor | Graphite | Nickel Graphite | Silver Aluminum | Silver Copper | Nickel | Fluoro Nickel Graphite | Fluoro Silver Aluminum | Fluoro Silver Copper | Fluoro Nickel |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Standard | On request | ||||||||||
| Frequency | Shielding Performance STD 285 /MIL-DTL 83528C (dB) | Shielding Performance STD 285 /MIL-DTL 83528C (dB) | |||||||||
| 10 MHz | N/A | N/A | 30 | 115 | 111 | 115 | 114 | 116 | 114 | 116 | 110 |
| 100 MHz | 60 | 65 | 65 | 121 | 120 | 122 | 115 | 122 | 122 | 125 | 116 |
| 400 MHz | 98 | 110 | 60 | 119 | 120 | 119 | 121 | 119 | 118 | 118 | 124 |
| 1 GHz | 94 | 108 | N/A | 122 | 121 | 123 | 114 | 122 | 121 | 124 | 117 |
| 2 GHz | 91 | 105 | 40 | 122 | 119 | 122 | 122 | 122 | 123 | 121 | 112 |
| 6 GHz | 90 | 102 | N/A | 115 | 115 | 116 | 117 | 114 | 109 | 117 | 111 |
| 10 GHz | 90 | 100 | 30 | 114 | 112 | 115 | 114 | 107 | 114 | 115 | 113 |
| 18 GHz | N/A | N/A | N/A | 106 | 105 | 104 | 105 | 105 | 103 | 104 | 103 |
| OperatingTemp | - | - | +160 | +160 | +160 | +125 | +160 | +160 | +160 | +125 | +160 |
| Range (°C) | - | - | -50 | -55 | -55 | -55 | -55 | -55 | -55 | -55 | -55 |
| Colour | Grey | Silver | Black | Dark Grey | Beige | Dark Tan | Grey | Green | Light Green | Green | Dark Green |
| Shore Hardness (A +/-5) ASTM D2240 | - | - | 60 | 60 | 65 | 65 | 65 | 65 | 70 | 65 | 70 |
| Volume Resistivity (ohm-cm) ASTM D991 | - | - | 2.2 | 0.04 | 0.008 | 0.005 | 0.1 | 0.05 | 0.01 | 0.005 | 0.1 |
| Specific Gravity (+/- 0.25) | - | - | 2.0 | 2.0 | 2.0 | 3.5 | 4.5 | 2.2 | 2.0 | 4.0 | 4.8 |
Standard extrusions (other sizes on request)
Type 1: Hollow
| Hollow | ||
|---|---|---|
| Part number | Outside A (mm) | Inside B (mm) |
| 7900-1-X-X-0.9-0.3 | 0.9 | 0.3 |
| 7900-1-X-X-1.2-0.5 | 1.2 | 0.5 |
| 7900-1-X-X-1.6-0.5 | 1.6 | 0.5 |
| 7900-1-X-X-1.8-0.5 | 1.8 | 0.5 |
| 7900-1-X-X-1.9-0.7 | 1.9 | 0.7 |
| 7900-1-X-X-2.0-0.5 | 2.0 | 0.5 |
| 7900-1-X-X-2.0-0.8 | 2.0 | 0.8 |
| 7900-1-X-X-2.4-0.8 | 2.4 | 0.8 |
| 7900-1-X-X-2.4-1.0 | 2.4 | 1.0 |
| 7900-1-X-X-2.6-1.5 | 2.6 | 1.5 |
| 7900-1-X-X-3.0-0.5 | 3.0 | 0.5 |
| 7900-1-X-X-3.0-0.8 | 3.0 | 0.8 |
| 7900-1-X-X-3.0-1.0 | 3.0 | 1.0 |
| 7900-1-X-X-3.0-1.6 | 3.0 | 1.6 |
| 7900-1-X-X-3.2-0.8 | 3.2 | 0.8 |
| 7900-1-X-X-3.2-1.1 | 3.2 | 1.1 |
| 7900-1-X-X-3.2-1.5 | 3.2 | 1.5 |
| 7900-1-X-X-3.5-0.8 | 3.5 | 0.8 |
| 7900-1-X-X-3.5-1.6 | 3.5 | 1.6 |
| 7900-1-X-X-3.6-1.5 | 3.6 | 1.5 |
| 7900-1-X-X-4.0-1.1 | 4.0 | 1.1 |
| 7900-1-X-X-4.0-1.3 | 4.0 | 1.3 |
| 7900-1-X-X-4.0-1.6 | 4.0 | 1.6 |
| 7900-1-X-X-4.0-2.0 | 4.0 | 2.0 |
| 7900-1-X-X-4.1-2.0 | 4.1 | 2.0 |
| 7900-1-X-X-4.5-1.6 | 4.5 | 1.6 |
| 7900-1-X-X-4.8-2.4 | 4.8 | 2.4 |
| 7900-1-X-X-5.0-1.6 | 5.0 | 1.6 |
| 7900-1-X-X-5.0-3.0 | 5.0 | 3.0 |
| 7900-1-X-X-5.5-1.6 | 5.5 | 1.6 |
| 7900-1-X-X-5.5-3.2 | 5.5 | 3.2 |
| 7900-1-X-X-6.0-1.6 | 6.0 | 1.6 |
| 7900-1-X-X-6.0-3.2 | 6.0 | 3.2 |
| 7900-1-X-X-6.0-4.0 | 6.0 | 4.0 |
| 7900-1-X-X-6.4-1.6 | 6.4 | 1.6 |
| 7900-1-X-X-6.4-3.2 | 6.4 | 3.2 |
| 7900-1-X-X-8.0-5.0 | 8.0 | 5.0 |
| 7900-1-X-X-8.0-6.0 | 8.0 | 6.0 |
| 7900-1-X-X-9.0-6.4 | 9.0 | 6.4 |
| 7900-1-X-X-9.5-6.4 | 9.5 | 6.4 |
| 7900-1-X-X-10.0-7.0 | 10.0 | 7.0 |
| 7900-1-X-X-10.0-8.0 | 10.0 | 8.0 |
| 7900-1-X-X-12.0-8.0 | 12.0 | 8.0 |
| 7900-1-X-X-15.0-12.0 | 15.0 | 12.0 |
| 7900-1-X-X-16.0-12.0 | 16.0 | 12.0 |
| 7900-1-X-X-20.0-16.0 | 20.0 | 16.0 |
The X must be replaced for the desired base material code and conductive material code. Other sizes on request
Type 2: Solid
| Solid | Suggested groove dimensions | ||
|---|---|---|---|
| Part number | Diameter (mm) | Depth +/- 0.005 |
Width 97% max groove fill |
| 7900-2-X-X-1.0 | 1.0 | 0.74 | 1.60 |
| 7900-2-X-X-1.2 | 1.2 | 0.94 | 1.70 |
| 7900-2-X-X-1.4 | 1.4 | 1.04 | 1.83 |
| 7900-2-X-X-1.6 | 1.6 | 1.24 | 2.01 |
| 7900-2-X-X-1.8 | 1.8 | 1.42 | 2.18 |
| 7900-2-X-X-2.0 | 2.0 | 1.63 | 2.39 |
| 7900-2-X-X-2.4 | 2.4 | 1.93 | 2.72 |
| 7900-2-X-X-2.6 | 2.6 | 2.13 | 2.97 |
| 7900-2-X-X-2.8 | 2.8 | 2.34 | 3.17 |
| 7900-2-X-X-3.0 | 3.0 | 2.59 | 3.33 |
| 7900-2-X-X-3.2 | 3.2 | 2.71 | 3.53 |
| 7900-2-X-X-3.5 | 3.5 | 2.90 | 3.86 |
| 7900-2-X-X-4.0 | 4.0 | 3.28 | 4.34 |
| 7900-2-X-X-4.5 | 4.5 | 3.54 | 4.63 |
| 7900-2-X-X-4.8 | 4.8 | 3.91 | 5.08 |
| 7900-2-X-X-5.0 | 5.0 | 4.06 | 5.26 |
| 7900-2-X-X-5.4 | 5.4 | 4.50 | 5.94 |
| 7900-2-X-X-5.5 | 5.5 | 4.55 | 6.04 |
| 7900-2-X-X-6.0 | 6.0 | 4.90 | 6.45 |
| 7900-2-X-X-6.4 | 6.4 | 5.15 | 6.75 |
| 7900-2-X-X-7.0 | 7.0 | 5.74 | 7.39 |
| 7900-2-X-X-7.5 | 7.5 | 6.04 | 7.85 |
| 7900-2-X-X-8.0 | 8.0 | ||
| 7900-2-X-X-8.5 | 8.5 | ||
| 7900-2-X-X-9.0 | 9.0 | ||
| 7900-2-X-X-9.5 | 9.5 | ||
| 7900-2-X-X-10.0 | 10.0 | ||
| 7900-2-X-X-11.0 | 11.0 | ||
| 7900-2-X-X-12.0 | 12.0 | ||
| 7900-2-X-X-15.0 | 15.0 | ||
| 7900-2-X-X-18.0 | 18.0 | ||
| 7900-2-X-X-20.0 | 20.0 | ||
The X must be replaced for the desired base material code and conductive material code. Other sizes on request
Type 3: Cell rubber
| Cell Rubber | |
|---|---|
| Part number | Diameter (mm) |
| 7900-3-X-X-2.1 | 2.1 |
| 7900-3-X-X-3.0 | 3.0 |
| 7900-3-X-X-3.5 | 3.5 |
| 7900-3-X-X-4.0 | 4.0 |
| 7900-3-X-X-4.5 | 4.5 |
| 7900-3-X-X-5.0 | 5.0 |
| 7900-3-X-X-5.5 | 5.5 |
| 7900-3-X-X-6.0 | 6.0 |
| 7900-3-X-X-6.5 | 6.5 |
| 7900-3-X-X-7.0 | 7.0 |
| 7900-3-X-X-7.5 | 7.5 |
| 7900-3-X-X-8.0 | 8.0 |
| 7900-3-X-X-8.5 | 8.5 |
| 7900-3-X-X-9.0 | 9.0 |
| 7900-3-X-X-9.5 | 9.5 |
| 7900-3-X-X-10.0 | 10.0 |
| 7900-3-X-X-11.0 | 11.0 |
| 7900-3-X-X-12.0 | 12.0 |
| 7900-3-X-X-15.0 | 15.0 |
| 7900-3-X-X-18.0 | 18.0 |
| 7900-3-X-X-20.0 | 20.0 |
| 7900-3-X-X-22.0 | 22.0 |
| 7900-3-X-X-25.0 | 25.0 |
The X must be replaced for the desired base material code and conductive material code. Other sizes on request
Type 4: Rectangular
| Rectangular | ||
|---|---|---|
| Part number | Width A (mm) | Height B (mm) |
| 7900-4-X-X-0.25-1.0 | 0.25 | 1.0 |
| 7900-4-X-X-0.25-1.5 | 0.25 | 1.5 |
| 7900-4-X-X-0.25-2.0 | 0.25 | 2.0 |
| 7900-4-X-X-0.25-2.5 | 0.25 | 2.5 |
| 7900-4-X-X-0.25-3.0 | 0.25 | 3.0 |
| 7900-4-X-X-0.5-1.0 | 0.5 | 1.0 |
| 7900-4-X-X-0.5-1.5 | 0.5 | 1.5 |
| 7900-4-X-X-0.5-2.0 | 0.5 | 2.0 |
| 7900-4-X-X-0.5-2.5 | 0.5 | 2.5 |
| 7900-4-X-X-0.5-3.0 | 0.5 | 3.0 |
| 7900-4-X-X-0.8-1.0 | 0.8 | 1.0 |
| 7900-4-X-X-0.8-1.5 | 0.8 | 1.5 |
| 7900-4-X-X-0.8-2.0 | 0.8 | 2.0 |
| 7900-4-X-X-0.8-2.5 | 0.8 | 2.5 |
| 7900-4-X-X-0.8-3.0 | 0.8 | 3.0 |
| 7900-4-X-X-1.0-1.0 | 1.0 | 1.0 |
| 7900-4-X-X-1.0-1.5 | 1.0 | 1.5 |
| 7900-4-X-X-1.0-2.0 | 1.0 | 2.0 |
| 7900-4-X-X-1.0-2.5 | 1.0 | 2.5 |
| 7900-4-X-X-1.0-3.0 | 1.0 | 3.0 |
| 7900-4-X-X-1.5-1.0 | 1.5 | 1.0 |
| 7900-4-X-X-1.5-2.0 | 1.5 | 2.0 |
| 7900-4-X-X-1.5-3.0 | 1.5 | 3.0 |
| 7900-4-X-X-1.6-1.0 | 1.6 | 1.0 |
| 7900-4-X-X-1.6-1.6 | 1.6 | 1.6 |
| 7900-4-X-X-1.8-1.0 | 1.8 | 1.0 |
| 7900-4-X-X-1.8-1.6 | 1.8 | 1.6 |
| 7900-4-X-X-2.0-1.0 | 2.0 | 1.0 |
| 7900-4-X-X-2.0-1.6 | 2.0 | 1.6 |
| 7900-4-X-X-2.0-2.0 | 2.0 | 2.0 |
| 7900-4-X-X-2.0-3.0 | 2.0 | 3.0 |
| 7900-4-X-X-2.4-2.0 | 2.4 | 2.0 |
| 7900-4-X-X-3.0-2.0 | 3.0 | 2.0 |
| 7900-4-X-X-3.2-1.6 | 3.2 | 1.6 |
| 7900-4-X-X-12.7-1.6 | 12.7 | 1.6 |
| 7900-4-X-X-12.7-2.0 | 12.7 | 2.0 |
| 7900-4-X-X-12.7-3.0 | 12.7 | 3.0 |
| 7900-4-X-X-12.7-4.8 | 12.7 | 4.8 |
| 7900-4-X-X-15.9-1.6 | 15.9 | 1.6 |
| 7900-4-X-X-15.9-2.0 | 15.9 | 2.0 |
| 7900-4-X-X-19.0-2.0 | 19.0 | 2.0 |
| 7900-4-X-X-22.35-1.6 | 22.35 | 1.6 |
| 7900-4-X-X-22.35-2.0 | 22.35 | 2.0 |
| 7900-4-X-X-25.4-6.4 | 25.4 | 6.4 |
The X must be replaced for the desired base material code and conductive material code. Other sizes on request
7910 Conductive jointed O-rings
We also supply Conductive jointed O-rings. The 7910 series are practically the same as the 7900 series O-Profiles, however, this is a turnkey closed O-ring. They are used where environmental and EMI screening is required but were little space is available.
For more information about check out our 7910 Conductive jointed O-rings page.
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